diff --git a/src/Domain/Identity/Identity.php b/src/Domain/Identity/Identity.php
index b0b8c9b..76551e9 100644
--- a/src/Domain/Identity/Identity.php
+++ b/src/Domain/Identity/Identity.php
@@ -20,16 +20,11 @@ interface Identity extends Equality
 {
     /**
      * IdAbstract constructor.
-     * @param T|null $id
+     * @param T $id
      * @throws InvalidIdException
      */
     public function __construct($id);
 
-    /**
-     * @return string
-     */
-    public function toScalar(): string;
-
     /**
      * @return string
      */
diff --git a/src/Domain/ValueObject/ValueObject.php b/src/Domain/ValueObject/ValueObject.php
index 3adc576..7e8ca85 100644
--- a/src/Domain/ValueObject/ValueObject.php
+++ b/src/Domain/ValueObject/ValueObject.php
@@ -10,16 +10,9 @@
 /**
  * Interface ValueObject
  * @psalm-immutable
- * @template T
  */
 interface ValueObject
 {
-    /**
-     * @psalm-return T
-     * @return T
-     */
-    public function toScalar();
-
     /**
      * @return string
      */